Clarion Head Units

[Kaotic Lazagna]

okay, i was originally going to use the factory head unit for my system, but my friend bought a new deck and gave me his old on. i'm at school right now, so i can't look at the box, but i think it's this one

http://www.clarion.com/us/en/products/2006/audio/source_units/cd/DXZ465MP/us-en-product-pf_1134643389103.html

now i'm wondering what would i need in order for me to install an amp and a sub. would i just need RCA extensions? i know it's possible to hook up an amp and a sub, but i don't see any pre-outs on this unit.

[Kaotic Lazagna]

also, do i still need a harness for this? the end of the one my friend gave me has 13 pins in it, and i'm not sure if it originally came with it, or he bought one to make it work in his Civic.

[ChinoCharles]

5058

[Kaotic Lazagna]

isn't the two sets of preouts for the front and rear speakers?